/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

#include <string.h>

#include "dma.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
#define RX_LEN 100
uint8_t RxData[RX_LEN];
uint8_t TxData_led_on[10]="LED is ON";
uint8_t TxData_led_off[10]="LED is OFF";

// uint8_t TxData_waiting[20]="waiting for command";
// uint8_t RxData_led_state[20];
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_USART1_UART_Init();
  HAL_UARTEx_ReceiveToIdle_DMA(&huart1, RxData, RX_LEN);
  /* USER CODE BEGIN 2 */
  // HAL_UART_Transmit_IT(&huart1,TxData_led_off,15);
  // HAL_UART_Receive_IT(&huart1,RxData_led_state,15);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    // HAL_UART_Receive_IT(&huart1,RxData_led_state,15);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{
  if (huart == &huart1)
  {
    RxData[Size] = '\0';  // 加字符串结束符

    if (strstr((char*)RxData, "LED_ON"))
    {
      HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);
      HAL_UART_Transmit_IT(&huart1,TxData_led_on,sizeof(TxData_led_on));

    }
    else if (strstr((char*)RxData, "LED_OFF"))
    {
      HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_SET);
      HAL_UART_Transmit_IT(&huart1,TxData_led_off,sizeof(TxData_led_off));
    }

    // 清空
    memset(RxData, 0, RX_LEN);

    // 重新接收
    HAL_UARTEx_ReceiveToIdle_DMA(&huart1, RxData, RX_LEN);
  }
}
// void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)//中断回调函数
// {
//
//   HAL_UART_Receive_IT(&huart1,RxData_led_state,7);
//   RxData_led_state[8]='\0';//保证强转变量类型之后的内存合法性
//   if (strstr((char*)RxData_led_state,"LED_ON"))//字符查找——需要引入新的头文件
//   {
//     HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET);
//     HAL_UART_Transmit_IT(&huart1,TxData_led_on,sizeof(TxData_led_on));
//     memset(RxData_led_state, 0, sizeof(RxData_led_state));//清空接收数组（缓存）
//
//     //for (int i=0;i<=8;i++)
//      // {
//      // RxData_led_state[i]=0;//没有接收缓冲区，因此用for循环置零串口接收数组
//     //  }
//
//   }
//   else if (strstr((char*)RxData_led_state,"LED_OFF"))
//   {
//     HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_SET);
//     HAL_UART_Transmit_IT(&huart1,TxData_led_off,sizeof(TxData_led_off));
//     //for (int i=0;i<=8;i++)
//     //  {
//     //  RxData_led_state[i]=0;
//     //  }
//     memset(RxData_led_state, 0, sizeof(RxData_led_state));//清空接收数组（缓存）
//   }
//   HAL_UART_Receive_IT(&huart1,RxData_led_state,15);//接收完使能
//
// }
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
